/* change the underlying file,
* we have to wait at least a second to see the change in the file's lastModified timestamp */
Thread.sleep(2000L);
writeLines(testFile, UPDATED_STRING_IDS);
migrator.refresh(null);
long cowAsLong = migrator.toLongID("cow");
long donkeyAsLong = migrator.toLongID("donkey");
assertEquals("dog", migrator.toStringID(dogAsLong));
assertEquals("cow", migrator.toStringID(cowAsLong));